Truck-unloading appliance



Patented Septpg, Y y il Kewanee, in the county of-ienry and State of.Illinois, have invented certain new and Y useful Improvements Ain`Trucla-Unioading Appliaiices,V foffwhicli the following; risspecification. Y*

RAYMOND Le. spinnen, or Kawai:

j Y o @4p n iiniriiiiiiois, `essienoa To KEWANEE IMPLEMNT COMPANY, OFKENEE, ILLINOIS, A COBVORATION OF ILLINOIS.

" YTrinoir-niviio viiiiive APPLIANCE.

ToaZZ iofom it mai) conce/iwi -j Be'it known that I', RAYixroNDBL'AGLIDDEN,

acitiaen Vof the United Statesi residing at vMy invention aims' to 1provide a simple.,- Yeflicient, fand easily-operated ap'paratuslrfforfdumping l-or discharging fthe contents of 've-:V liiclesf-not fitted":orf equipped lwitli Lspecial means-for performing siichunloading operafStatedsomewhat differently,4 leading' purposeof' theinvention Vis theproduction of a suitableappliance foi1easily and readily dumping theload'sofvehicles, such asino- Y'tor-trucks of theordinaryftype, asforexample'tliose customarily used byfarmers and others,

' gSuchunloadingor load-fdischargingrmechanisms are of valueandservicein connection with grain elevators and'similar estabflishments, where it is desired to quickly dispose of the loads ofvehicles unftted lor not supplied with dumping arrangements andxofvarying sizes, o weights,` capacities, etc. A

'To this end,` the improved and ,novel appliance is composed of aplatform adapted to support the front wheels'only of the-truck,r

and provided with means .for effecting its riseor elevation, whereby thetruck assumes a vsufficiently vinclined or sloping disposition to easilydump or discharge its contents .out the rearend, whereupon the platformis lowered tonorinal position allowing'the empty truck or other vehicleto'be driven One outstanding purpose of the invention 'isthe provisionof a mechanismof-this type Vfc-apable of performing'the worl: specified1performance,

which is comparatively economical to manufacture Y and maintain inproper operative condition, which is unlikely tobecome dam-- aged orinjured in ordinary service, and

which can be satisfactorily actuated by novicesV without substantialdanger' offiniproper in @definan those sinned initie art may o havea'full'andcomplete.; understanding of `the invention both fromVstructural and o functional standpoiiitgl "have illustrated prei`telescoping frames; and

Appiiatiqn iei ifiafcii'gfi; i921. sei-iai No. 450,285.,

ferred" and desirable embodiment ofthe in- Vvention intheaccoiiipanyingdrawings forming a partof this specification, and to whichreferenceshould be'fhad in connectioniwith -the following-detaileddescription, like reference characters-ieferriiigto the saine partsthroughout the severalv views.-

j Iiithese-drawings: -V

fr-i* ignite 1 is a.fragmentary View showing-aV portion of theappliaiice in truclrunloading position); 1 g f i Figure 2 is aperspectiveview of the ver.-

ticaily movable platform and its actuating mechanism with the platformat or near its uppermost limit of Tmovement;

`ligure 3 is a perspective view of the same parts on a larger `scaleshowing the platforni in lowered position;

Figure 4 is a fragmentary view partly in Y section illustrating theantiwfriction ball constructions employed in connection with the Figure5 is a horizontal section through vone `cerner of the telescoping postsor uprights showing the 'ra 'igeiiients.V i'

' The appliance, as is' clearly depicted in the drawings, includes abase-plate 11 located the proper distance below the floor or surface 'ofthe ground on which the truck or vehicle anti-friction ball aris adaptedtotravel soy that When the platforni isin its lowerinost position, itwill he- `flush with or Ona level with such floor or ground, whereby thetruckinay be driven on to or *over the platform with facility and ease.i

Mounted on such base or foundation plate, located in a suitable .pitorin any case atthe proper level, is an outer, stationary, rectangularframe composed of bottomfside and Ystre'ngijth'enjV and fstiffen theframewrkby horizontal brace-bars or straps 15 and crossing,rinclined ordiagonal bars or straps 1G and'l?. i" A i Y ff Y At their upper'ends,such cornerjposts or standards andoblque stay barsare'lastened to the;downwardly' extended flanges ofV top,

theirotherhorizontal flanges disposed out- ,wardl-y; some' 'of the endsof the shorterV crossed barsllbeing secured to the posts-YV themselvesatabout midway of their ,h eightAV all as is clearly illustrated in"Figures 2 and 3- 'f i Telescopically or vslidably disposed inside of,VSuchouterAfixed or stable frame, and

' adapted itornove vertically therein, is an in v Y nerrectangularframe; only slightly smaller than the surrounding`or'enclosing france- This interior-skeletontraine built up f horizontalsideand end bottoni"anglebars 21 and 22', Vertical,corner,anglebar'posts 23, horizontal V.and :inclined brace strips 24',25,5and'y265; and iop, side and end bars 27 Iand 28 3a suitable Vandappropriate plank-fr'k platform 29:, beingv mountedon. the top of fsuchfniovable innerpfrain'e. Y

mount-edA on Ythe middle of the base 1l and contains a A,reciproeateryplungeror piston;

',notshown, on thelower endet a suppressed air beneath the piston,whereby the; rise and? descent of the inner -ifranie and:V its platformmay be readily controlled, it being.understoodgoif course, t-hat othersuit- 1 able liftingmeans may be employed if preporting` shaftV 32connected to thebottoin :facegjof the platform 29,5.the lower end oi"tlie'cyliuder or casing` hav-ing `a pipe 33 for the admission anddischarge or coinerred,such as electric or hydraulic mechanisnu;l lipe33, at a suitable point is equipped with 'a controllingv valve7 not"shown, butwhich of course, isnecessary to y governjthe iowofcornpressed air into and discharge from the cylinder. 'To facilitate Ythe upward y and Vytrawel"of the-inner 'framein the outer one, V Aeach-.corner bar lelof the latter near its up per e'nd is equipped ineach. ofits two an- Y ,'Vgnlarlyfdisposed Y flanges :with an. aperture3l accommodating; aportionqof an ardzi-ric-- tion ball 35l whichprojects slightlytlirough y "isuchhole inwardly of theJ-lrame, as, showniii-'Figure 5,- Vthus bearingon .the face oi the corresponding post ofthe-inner reciproca- Y v tory frame.

VGO

l 'USuc-lifball is kept iniplace by a socketmeniber 36 fastened by boltsor rivets to the outer surface of the! postyas is ullyillus- .trated inFigure `3. v.

jEachcorner postor .uprightsupport 23 of the interior frame near itslower` endis proridedwith verticallyoflset holes 37Min its two'flanges,each `associated .with Van antifriction ball yentended outwardly partwaythrougrhl the hole to bear and roll onw the Vin`V nerlface'of thecorresponding corner postof fcyiiiideizf ai is"- downward 'the outerfriture,V each of such balls being .hem in DQStOfand againstdisplacement 'by SCket-'Iieniber 39 bolted orfotherwise Y securedagainstth'e inner "face @if 'Lhefpost Y VasV is fully shown in Figure4.

" ltrwill be seen from this constructioiiithat the several balls theouteriframebear on and assist in guiding the inner iranien and that thecorresponding vafnti-i'riction .ele-

ments of the inner'frame travel or roll Ven the interiorl'aces the.outer framework, Y

thus guiding the movements of the travelinoi i frame with lniniinumfofr'vriction. i

bincethe "balls'ot'thef buter Vranie are sta? tionaryvgand theVcompanion or' -eornple-JV `nrentaryfballs of tlieinnerffrarneare .atthen-' lower end ot thefflatter,A the Vdistance`bef tfween theytwolsetsff or groups isf alwa 4sj the maximum permitted by therelativeVcient `gui'dir'igg: by fthe balls sobtained, f y.

ln; operatio'rnA jtheailnp-royed app used-substantially asifollowsz-Y- Yf g When the platform :is infits lowerln ound or form.

, 'Thsnjgcmpfesfsd' if Lieja-diarrea" :to the v cylinder below itsvpiston or plungeljplnd the latte'rascends raising the, nlatforru and theront portion 'of thetruck; causingv suohfy'e?V hicle to Abecomesuliiciently iinclinedptodis- Y charge its load'ou'tof itsl rear end'aside- V i Y load-'delivery [operation picted in Figure l,

The "dumping or having been accomplished in ,ni'anien the air. intheVcylinder gradu-Y i1-1rv essere, bringing',abouttherrespeiiding slowVdescent of theplat-torni;` thus gradu-Y ally causingr lieftrfucl'ttoassrunie its 13mm@ hOIlZOll'al position.v r

l/Vhen the Iplatiorni has .reacheditslowerf most positi'fonjthe truclr1may *rb e'lfrun oyerft Y 1- or backed Vfrom it", whereupon theplatQV Y'forni isready to receiyejthe rontfwheels losY the next-loaded`truck'and" v specified load'discharging'operation-f; i ji thatthe'invention is not'` liniited auch4 eon-V l fined te the prcise.and.mctdetailsfd 6011:

struction p resentedjsince .thesefmaybe inedi-V iedwithin comparativelywide'lirhits with-' 'A out departure fromA the heart andV Aessence of Ythe invention and .without the'` Asacriicefof any of' its substantial`benefits Yand f advani Claims-;

characterA describech'f the conibiidnationfQ-of ra iio` Y latterpartakes of the movements of the port the front wheels only of a t'ruokto disformer, ball-bearings near the Vtop portv of charge its load,zeachball-bearing compris-- said outervramebearng on saidV inner lux-VYv inga 'ball projecting through a, hole in the R0 iliary frame, veitioallyoffset ball-bearings' frame and held in position by a socket mem- 57011and near the lower end ,of seid inner" 'oer secured to the other side ofthe frame.

frame Vbearing on s-ad outer frame, and a platform onV seid innerframe-adapted tos'up- RAYMOND BQGLIDDEN.

